The SVR switch offers an above panel actuator, below panel and paddle actuator styles. It is designed to meet the severe environmental requirements of the construction and agricultural vehicle markets, and is sealed at the front and back to meets the rigorous sealing requirements of IP68.. Bus and Coach Electronic & Electrical Parts Catalogue 2018 Uploaded by Alliance Electronics Ltd Alliance Electronics supplies a wide range of new & reconditioned Electrical & Electronic parts that are used in the Bus & Coach Industry & can help keep running costs to a minimum..